New breakthrough HIGH OUTPUT™ battery technology provides up to 50% more power of the entire M18™ system compared to other Milwaukee© REDLITHIUM-ION™ technology. Patented REDLINK™ intelligence protects the pack from tough jobsite conditions to ensure optimum performance. Runs up to 50% cooler than other Milwaukee™ REDLITHIUM-ION™ technology through heavy application to push cordless tools harder and longer than ever before. The new HIGH OUTPUT™ battery pack drives complete corded replacement on the job site with more run-time than ever before. Durable metal frame battery construction with shock responsive separators prevents pack failure from excessive vibrations or drops. On-board battery fuel gauge helps the user to maximise battery run-time efficiency. Individual cell monitoring ensures optimal charge and discharge for maximum life. Battery pack capacity (Ah)_12.0_ Battery type_Li-ion